Mass Effect 3 Wiki Guide

Shrike Abyssal: Prothean Obelisk

Overhearing a conversation in the Citadel Embassies on your first visit to the Citadel. Exit the elevator and hang a left. In the lounge area a Volus is discussing the lost Obelisk. This will add the Mission to your Mission Summary.

The Journal doesn’t reveal its exact location, so you’ll need to do a little sleuthing on your own. After completing Priority: Palaven, head to the Shrike Abyssal cluster and then to the Urla Rast system, where you’ll need to scan Talis Fia. EDI picks up some interesting activity on that planet, which should prompt you to investigate further.

Scan the surface of the planet, using the white line on the scanning reticle as guidance for where to go. When you hit a bright blip, launch a probe to retrieve the Prothean Obelisk. Return to the Citadel and give the Obelisk to the Volus diplomat waiting at the Citadel Embassies.